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根系含量
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  root content
     The influences on the soil ecological attributes mainly include the quality, structure, the loose and tense degree, the vegetation root content, pH value, unit weight, organic matter, the content of nutrient elements, and so on.
     土壤生态因子类影响表现在:土壤质地、结构、松紧度、植物根系含量、pH值、容重、有机质、养分元素含量等理化性质,因各景观区结构不同及影响程度不一而有差异。
短句来源
     Twelve evenly spaced soil profiles(10mx20m) were selected over a 32degree Chinese PinefPinus tabulaeformis) plantation forested hill-slope in Miyun Reservoir catchment for the study. Seventy-two undisturbed cores for soil water retention measurement and samples for root content and stoniness analysis were collected from those profiles at depths, with two replications each, 0-20cm, 20-40cm, and 40-60cm, respectively.
     研究从密云水库流域周边坡面(32°)油松林地内均匀挖取12个土壤剖面(10m×20m),以每层2个重复,从0-20cm,20-40cm,40-60cm土壤层共采集72个非扰动土壤样本测定土壤水分特征曲线,并采集样本测定根系含量及石砾含量。
短句来源
     Van Genuchten model fits slightly better the observed water content and water potential data than Brook-Corey model by using RETC6.0 package. Therefore, traditional statistics and geo-statistics were used for spatial variability analysis of soil water movement function parameters of fitted Van Genuchten models and its relations with soil physical parameters such as root content, porosity, stoniness, and bulk density.
     采用RETC6.0对比分析Brooks-Corey模型和Van-Genuchten模型后,研究认为总体上Van-Genuchten模型的拟合效果较Brooks-Corey模型稍好,因此,结合传统统计方法和地统计方法,研究分析了以Van-Genuchten模型拟合得到的土壤水分运动特征参数空间异质性,以及与根系含量、石砾、孔隙度、容重等土壤物理特性的关系。
短句来源
     The morphological characteristics of soil profile except the color and the root content in humus layer in forest gaps were not apparently different from those under the canopy.
     林隙土壤的剖面形态特征 ,除A层的颜色、根系含量有别外 ,与林下土壤无明显区别 .
短句来源
     In the south edge of Hunshandake sand,the seed source effect of enclosed sandy grassland is tentatively researched by contrasting the grassland community's characteristics and grass root content in different places grassland out of fence and the grassland which was enclosed for 7 years as contrast.
     在浑善达克沙地南缘,以围封7年的沙化草地以及围栏外周围不同地段作为研究对象,通过对比分析围栏外不同地段,草地群落特征及土壤根系含量,并以围栏内草地作对照,对围封沙化草地的“种子岛”效应进行了尝试性研究。
短句来源
  “根系含量”译为未确定词的双语例句
     Dimensions ditribute from 1.3148 to 2.0814, and correlation reaches the Significance level of 0.01. In addition, dimension will low if fine root (0~1 mm) rate of forest is low.
     5种类型的根系结构的径级含量分布的分形维数在2.0814~1.3148之间,相关关系都达极显著水平。 另外,0~1 mm的根系含量低的林分,其分形维数也低,即0~1 mm的根系含量越高,其分形维数越高。
短句来源
     Na~(+) was mainly accumulated in the stem of Aloe vera,content of Na~(+) in the leaves and root was lower;
     Na+主要积累在茎部,叶片和根系含量较小;
短句来源
     2. The Na and K concentrations in shoot of wheat and maize are higher than that of in root. Na concentrations in shoot of wheat increases more than these in shoot as the NaCl stress develops.
     2.小麦、玉米茎叶的Na、K含量高于根系含量
短句来源
     The PH value is very high in this region for all plots' PH value are higher than 8. The top soil layer is lowest in pH value, because there are more trees or grasses' organism that can improve the soil's chemical properties.
     该地区土壤碱性较强,pH值均大于8。 表土层pH值相对较低,植物根系含量丰富,枯枝落叶层较厚,改善了土壤酸碱性。
短句来源
     Contraposing the rocky slope after virescence, the critical condition of erosive failure on the surface is studied. The effect of distribution density of roots on the edaphic ability to resist erosion is studied on the basis of the reinforced effect formula of roots, and a system of estimate and forecast theedaphic ability to resist erosion including amount of roots is established, which can provide academic evidence for the selection of variety and quantity of grass seeds in the design of rocky slope biologic protection.
     针对坡面植草的岩质边坡进行力学分析,研究边坡表层冲刷破坏的临界条件,并在根系锚固公式的基础上研究根系分布密度对边坡表层土壤抗冲刷能力的影响,建立一个综合根系含量在内的土壤抗冲刷能力评价和预报体系,为岩质边坡生态防护设计时草种和数量的选择提供理论依据。
短句来源
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  相似匹配句对
     ATP contentin roots decreased, and the activity of cytchromeoxidase was much lower than that of control.
     根系ATP含量减少。
短句来源
     The three element contents of root had no significant difference.
     根系 3元素含量变化小。
短句来源
     But the hydrophilicity decreases as the doping Ag increases to a certain content.
     的摩尔含量
短句来源
     Then the contents of Cp.
     IgG含量
短句来源
     Defoliation and root rottingbecome progressively serious as the disease advances.
     根系腐烂。
短句来源
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  root content
Shear strength of undisturbed soils has a positive correlation with root content, and relevant regression models about undisturbed soil were established from this.
      
Analysis of plant roots on each sampling occasion showed that 6.88 nmol was, on average, equivalent to 16.15% of the total root content of cyanogenic glucosides.
      
In both the Al-tolerant and Al-sensitive lines, Al treatment significantly increased the total root content of organic acids, which was likely the result of Al stress and not the cause of the observed differential Al tolerance.
      
In both the Al-tolerant and Al-sensitive lines, Al treatment significantly increased the total root content of organic acids, which was likely the result of Al stress and not the cause of the observed differential Al tolerance.
      
When the endogenous root content of GA-like substances was reduced (86% decrease) by foliar application of CCC (6.30×10-5M), nodule numbers were increased by 56%, but nodule size and total nodule activity were similar to those of control plants.
      
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The Content and distribution of five nutrient elements (N, P, K, Ca and Mg ) of the artificial Cuninghamia lanceolata stands at different site-types and age-groups were investigated. The results show that the content of those nutrient elements in Cunninghamia lanceolata stands is related with the site-types and age-groups significantly. The total content of nutrients of the stands in the site-type Ⅲ age-group 1, 2 and 3are 23.2, 34.8 and 67.0 kg/Mu (1 Mu= 1/15 hectares) respectively,which in the site-type Ⅱ...

The Content and distribution of five nutrient elements (N, P, K, Ca and Mg ) of the artificial Cuninghamia lanceolata stands at different site-types and age-groups were investigated. The results show that the content of those nutrient elements in Cunninghamia lanceolata stands is related with the site-types and age-groups significantly. The total content of nutrients of the stands in the site-type Ⅲ age-group 1, 2 and 3are 23.2, 34.8 and 67.0 kg/Mu (1 Mu= 1/15 hectares) respectively,which in the site-type Ⅱ age-group i, 2and 3 are 47.3, 52.8 and 91.1 Kg/Mu,and which in the site-type Ⅰ age-group 1,2 and 3 are 50.6, 63.0 and 125.7 Kg/Mu respectively.The distributions of the biomass and nutrient content of the organs in Cunninghamia lanceolata are uneven. The stemwood biomass is over one half of the total biomass, but its nutrient content is very low. The crown biomass (needle leaves, branches, flowers and cones) is 20 percent of the total biomass, however its nutrient content is 50 percent of total content in the treet The biomass of the needle leaves is the lowest and the nitrogen content of the needle leaves is the highest; For example, the leaves biomass in the site-type Ⅱ age-group 1 stand is 11.4 percent of the total biomass and its nitrogen content is 64.8 percent of the total nitrogen content. The sequence of nutrient con-tent in different parts is as follows t needle leaf>flower and cone>branch>root>stem-wood. The nutrient content of the stands are not significant difference between the site-type Ⅰ and Ⅱ, on the other hand, there are significant difference between.the site-type Ⅰ-Ⅱ and site-type Ⅲ; not significant difference between age-group 2and, 3 , but significant difference between the age-group 2 - 3 and age-group l. The content of the calcium of the Cunninghamia lanceolata in age-group 3 is higher significantly than that in age-group l and 2 ; The content of the nitrogen, phosphorus and potassium in the needle leaves and roots in age-group 1 is higher significantly than that in age-group 2 - 3 .

本文研究了氮、磷、钾、钙和镁5个养分元素在广东西江地区杉木人工林不同立地不同龄组的含量和分配。结果表明这些养分元素在杉木林分的含量与立地条件的好坏和林龄的大小显著相关,Ⅲ立地1、2和3龄组林分的养分元素总贮量分别为23.2、34.8和67.0公斤/亩;Ⅱ立地1—3龄组分别为47.3、52.8和91.1公斤/亩;Ⅰ立地1—3龄组分别为50.6、62.6和125.7公斤/亩。各器官生物量和养分元素含量分配不均匀,干材生物量约占树体总生物量的一半以上,但养分含量却很低;树冠(枝、叶、花和果)的生物量约占总生物量的20%,而养分含量约占养分总量的50%以上;叶子生物量低,但氮素含量高,如Ⅱ立地1龄组的叶子生物量仅占总生物量11.4%,氮素含量却占总氮量的64.8%。各器官的养分含量依次为叶>花果>枝条>树根>树干。不同立地不同龄组的林分养分元素含量,Ⅰ、Ⅱ立地之间无显著差异,而它们与Ⅲ立地则有显著差异;2、3龄组之间无显著差异,而它们与1龄组有显著差异;钙的含量3龄组显著地高于1、2龄组;氮、磷、钾在叶子和根系的含量1龄组的显著地高于2、3龄组的。

The nitrogen amount of the trees of Laiyang pears has two high periods in a year, one is in May and the other in September. In the same period, the nitrogen amount of the younger tissues is higher than that of the old tissues. At the new shoots growth, the nitrogen amount is lower. The vigrous shoots are specially rich in nitrogen, and it decreases rapidly as the new shoots growth stops.The nitrogen amount of the vigrous tree is higher than that of the weak tree. The nitrogen amount in the same tissues vries...

The nitrogen amount of the trees of Laiyang pears has two high periods in a year, one is in May and the other in September. In the same period, the nitrogen amount of the younger tissues is higher than that of the old tissues. At the new shoots growth, the nitrogen amount is lower. The vigrous shoots are specially rich in nitrogen, and it decreases rapidly as the new shoots growth stops.The nitrogen amount of the vigrous tree is higher than that of the weak tree. The nitrogen amount in the same tissues vries with different periods. The percentage of nitrogen of both short shoots and small roots are the highest in the period of budding. The flowers are specially rich in nitrogen in the period of bloom. The nitrogen amount of both new shoots and their leaves are the highest in the period of shoot growth. The leaves and root system have high percentages of nitrogen in fall and the percentage of both the branches and the root system is higher in winter.

茌梨全氮水平年中有一次大的高峰和两次小的高峰。同期,幼龄组织较老龄组织含量高。新梢开始生长含量较低。旺盛新梢氮含量特别高,随新梢停止生长,氮水平迅速下降。旺树氮含量较弱树高。同一组织不同时期氮素水平不一。芽萌动期短梢和细根含量最高,开花期花朵含量最多,新梢生长期以新梢和其上的叶片最多,秋季以叶片和根系的含量最高,而冬季枝条和根系含量最多。

The authors had studied the soils and vegetation in forest gaps and under the canopy in the artificial coniferous forests of the West Mountain of Beijing. The results showed that:①The richness indexes of tree layer in forest gaps were similar to these under the canopy, but the richness indexes of shrub and herb layer were higher than those under the canopy. ②The litter layer in forest gaps was thinner than that under the canopy, the composition of the litter layer was herb remains and root twister while that...

The authors had studied the soils and vegetation in forest gaps and under the canopy in the artificial coniferous forests of the West Mountain of Beijing. The results showed that:①The richness indexes of tree layer in forest gaps were similar to these under the canopy, but the richness indexes of shrub and herb layer were higher than those under the canopy. ②The litter layer in forest gaps was thinner than that under the canopy, the composition of the litter layer was herb remains and root twister while that was in half decomposition; The morphological characteristics of soil profile except the color and the root content in humus layer in forest gaps were not apparently different from those under the canopy.③ The content of the soil organic matter, total nitrogen, available phosphorus and potassium of the humus horizon in forest gaps were 10 7%, 34 5%, 25 8% and 35 7% more than those under the canopy in Pinus tabulaeformis forest. ④Those items in forest gaps were 4 7%, 12 5%,9 4% and 31 1% more than those under the canopy in Pinus tabulaeformis and Platycladus orientalis mixed forest. ⑤The changes of soil pH, the oxido reductase activities had no significant trends. ⑥The authors proposed that soil water trends of time and space in forest gaps should be studied.

作者研究了北京西山地区人工针叶林林冠空隙和林冠下的土壤及植被状况 .结果表明 :①林隙中乔木物种丰富度指数与林下一致 ,但灌木和草本的物种丰富度指数比林下高 .②林隙土壤的枯枝落叶层比林下薄 ,其组分主要是草本和根系盘结物且呈半分解状态 ;林隙土壤的剖面形态特征 ,除A层的颜色、根系含量有别外 ,与林下土壤无明显区别 .③油松林林隙土壤中A层的土壤有机质、全氮、有效磷和速效钾分别比林冠下土壤高 10 7% ,34 5 % ,2 5 8%和 35 7% .④油松侧柏混交林中林隙土壤A层的土壤有机质、全氮、有效磷和速效钾分别比林冠下土壤高4 7% ,12 5 % ,9 4 %和 31 1% .⑤林隙土壤的pH、过氧化氢酶和多酚氧化酶没有明显的变化规律 .⑥建议对林隙土壤水分的时空动态变化进行研究 .

 
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